| Considering all of the various forms
of iris, it is possible to have some type of iris in bloom
throughout the year! The chart below is a graphical demonstration of
this. |
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| J | F | M | A | M | J | J | A | S | O | N | D | |
| Aril/Arilbred (AR/AB) |
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| Border Bearded (BB) |
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| Dutch Iris |
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| English Iris |
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| Intermediate Bearded (IB) |
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| Iris foetodisima (Showy seeds) |
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| Iris japonica |
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| Iris reticulata varieties |
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| Iris unguicularis |
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| Japanese |
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| Louisiana |
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| Miniature Dwarf Bearded (MDB) |
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| Miniature Tall Bearded (MTB) |
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| Pacific Coast |
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| Reblooming Bearded |
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| Siberian |
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| Spuria |
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| Standard Dwarf Bearded (SDB) |
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| Tall Bearded (TB) |
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Note: Within each classification of iris there is a further sub-classification determined by the bloom time and each variety is granted a designation of “Very Early” through “Very Late”. When utilizing iris in the landscape, consideration of bloom time can greatly prolong the length of the show. Note: In the Pacific Northwest, effects of microclimates can be very pronounced and affect blooming times dramatically. Two of the same varieties planted in the same landscape in different locations can bloom consecutively rather than concurrently! |
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